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(NoModeL) I I M. W HAZELTON.

SEGTIONAL STEAM BOILER. v No. 247,910. Patented Oct. 4,1881.

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I BY {E ATTORNEYS.

. the latter bya grate, E, composed of perforated -UNIITED STATES PATENT()FFICE.

MILTON W. HAZELTON, OF NEW YORK, N. Y., ASSIGNOR TO HIMSELF AND E. S. T.KENNEDY, OF SAME PLACE.

SECTlONAL STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 247,910, dated October4, 1881.

Application filed August 5, 1881.

To all whom it may concern:

Be it known that I, MILTON W. HAZELTON, of the city, county, and Stateof New York, have invented a new and Improved Sectional Steam-Boiler, ofwhich the following is a full,

clear, and exact description.

The object of this invention is to construct a boiler tliat shall beeconomical of fuel, quick to generate and superheat steam, easy ofrepair, and occupying comparatively little ground room.

In the accompanying drawings, Figure 1 is a sectional elevation of myimproved boiler set .in brick-work on line to 10, Fig. 4. Fig. 2 is aThe bottom of said cylinder Ais set on a suitable support, B, and aroundthe lower end of said cylinder A is an annular ash-pit, 0, above whichis the fire-chamber D, separated from plates, as shown in Fig. 4. Theopposite fuelentrances into the fire-chamber D are represented at b I).From the top of the fire-chamberD to a point several inches below thegrate E the cylinder A has an unbroken surface.

At the top of the fire-chamber D are two series of water-containingtubes, F, set conveniently close together, one above the other,radiating from the cylinder'A; and connected with these tubes F byelbows c c are perpendicular tubes F, that are extended downward throughnotches d in the edge of the grate E,

and .have their lower ends connected by elbows (No model.)

From j ust'above the tubes F nearly to the water-line of the boiler thespace within the boiler-inclosing walls H is filled with series of tubes1, closed at their outer ends and radiating from the cylinder A insuccessive planes one above the other, the tubes and spaces of theseveral series alternating with each other, as shown in Fig. 3, andabove the upper series of tubes I, below the water-line, radiate fromthe cylinder A a series of tubes, K, whose ends are connected by elbowsg with perpendicular tubes K, that extend downward almost in contactwiththe boiler-walls H to below the tubes F and are at this pointconnected by elbows h with horizontal tubes K that are entered into thecylinder A.' By this arrangement of cylinder and tubes a maximum fire--surface is obtained in a given space, and great economies in fuel arethereby made possible.

A little above the boiler water-line, which is indicated at is, Fig. 1,the cylinder A is enlarged into a steam-chamber, as shown at A andextending horizontally from about the bottom of this chamber A is aperforated circular disk, L, while from the top thereof extends anotherperforated circular disk, M.

Extending between the disks L M, and with their ends fitted in theperforations thereof, are vertical flues N, set in concentric circlesabout the steam-chamber A and serving for the escape of the products ofcombustion from the fire-chamber D.

A cap, 0, provided with a smoke-pipe, O,

surmounts the whole device.

The products of combustion escaping through the fines N serve tosuperheat the steam in the chamber A, and from said chamber A the steamis conducted through pipe P.

Having thus described my invention,I claim a as new and desire to secureby Letters Patent- 1. The combination, with a central uprightcylindrical boiler, A, havinga series of radiating-tubes, I, closed attheir outer ends and arrangedin successive planes one above the other, 95

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of the central boiler, A, and communicating the connected water-tubes FF 13* F radiat- 1o therewith at their ends through horizontal ing tubesI KK ,perpendicnlartubes K,disks pipes K K and of a series of shortvertical L M, and vertical flues N, arranged substantubes, F, andhorizontal connecting-pipes F F tially as herein shown and described.

5 and vertical smoke-fines N set in concentric rings about thesteam-chmilber, arranged as MILTON HAZELTON' set forth. Witnesses:

2. In a sectional steam-boiler, the combina- I. I. STORER,

tion, with the central Vertical cylinder A, of (J. SEDGWICK.

